package org.example.unSafe;


import java.util.List;
import java.util.UUID;
import java.util.concurrent.CopyOnWriteArrayList;

public class ListTest {
    public static void main(String[] args) {
       // List<String> list = new ArrayList<>();
        // List<String> list = new Vector<>();
//        List<String> list =  Collections.synchronizedList(new ArrayList<>());
       List<Object> list = new CopyOnWriteArrayList<>();
        for (int i = 0; i < 10; i++) {
            new Thread(()->{
                list.add(UUID.randomUUID().toString().substring(0,5));
                System.out.println(list);
            },String.valueOf(i)).start();
        }
    }
}
